Best Selection among Crack Criterions to Sandstone-Mudstone Formation and Its Application to Fracture Penetration Ability Evaluation
详细信息
- 责任者：Lu Husheng (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Zhang Junfeng
- 刊名：Journal of China University of Petroleum
- 出版年：2012
- 卷期：36(3)
- 关键词：裂隙型储集层 ; fractured reservoirs ; 裂隙 ; cracks
- 页码：p.14-19
- 图表：illus., 2 tables, 11 refs.
- 分类号：1003
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
摘要
Based on the present rock crack criterions,cores observation and rock mechanic tests,a new effective rock failure criterion for interbedded sand and mud stone formation in a certain fractured oil and gas field was developed through the method of mathematical deduction. The penetration degree of fractures in mudstone was evaluated based on the quantitative model between tectonic stress and fracture parameters.The results show that for the compressed conditions,multibowl Koulomb-Mohr criterion will be selected to study the formation,but for the tensile conditions,Griffith criterion should be selected.